Mitsubishi 1989-1993 GALANT Service Manual page 978

ACTIVE-ELECTRONIC CONTROL SUSPENSION - Troubleshooting
Operation
The ACTIVE-ECS system functions, in order to
improve the "air drag" characteristic, to adjust the
vehicle height to the LOW setting at the front end
only during the daytime when the vehicle speed
reaches 90 km/h (56 mph) or higher and continues
at that speed for a period of ten seconds or longer.
Service data indication
Code No.
18 Indicates the ON or OFF status of
the headlight switch.
ECU terminal voltages (when connector is connected)
Terminal
No.
Headlight switch signal
89
Headlight switch circuit (with the connector disconnected)
Connection destination Measurement
or measured Dart
89 Headlight relay
directional path, the vehicle height is adjusted to the
when signals from the headlight relay are input.
18: HEADLAMP SW. ON/OFF
When headlight switch is ON
When headlight switch is OFF
When there is damaged or disconnected wiring
Tester connection
Voltage
TSB Revision
During the nighttime, however, in order to prevent
deviation of the headlight beams from the required
LOW setting for both the front end and the rear end
Display
Condition
Check condition
Terminal
voltage
o v
Standard
ov